ARCTURUS M4/AR-15 MK16 Saber AT-AR11 AEG

ARCTURUS
Code:
376.49
  • Full metal construction
  • 6.03mm Steel tightbore inner barrel
  • Super slick MK16 M-LOK handguard

Perhaps you have heard of the MK16? No, not the SCAR MK16, the other one! The ARCTURUS MK16 Saber is a near perfect replica of one of the latest and greatest custom AR platforms to come from the real steel shooting world in the US. The Saber marries ARCTURUS' high end internals with an ultra modern external look, boasting full metal construction and a large proportion of steel parts.

The MK16 Saber is a full length M4 platform with a 14.5-inch outer barrel and a steel 6.03mm tightbore inner barrel paired with a rotary HOP-up unit, making it a beast outdoors, and perhaps even a potential DMR with the right upgrades. If you choose to challenge yourself with a long rifle indoors, you can't do much better than the Saber; its super light aluminium handguard gives you plenty of space for a nice C-clamp grip, making it easy to steer between targets at an impressive pace. No matter what you plan to do with it, the MK16 Saber from ARCTURUS would make a great addition to your armoury!

Full description

Description

The ARCTURUS MK16 Saber is a replica of one of the most popular current real world M4/AR-15 platforms in the US, and as such, is packing some highly desirable external parts and would make the perfect base gun for your custom gucci AR build.

The Saber boasts the MK16 free floated M-LOK handguard, an ambidextrous raptor style charging handle and a huge extended bolt release, giving it the look of a customised M4 platform straight out of the box, and its full metal construction and rock solid ARCTURUS internals give it the strength and performance to compete with almost anything else out there.

Starting at the tip of the 14.5-inch alloy outer barrel we can find an SF style tri-prong flash hider which attaches to the barrel's 14mm CCW male threaded tip. The SF style flash hider is a nice touch and gives the Saber a dynamic look, offering a welcome change from the usual birdcage flash hider, especially paired with the MK16 M-LOK handguard. The 14mm CCW male threaded barrel means if you want to add a suppressor or tracer unit you can, without the need for any additional adapters.

The handguard of the Saber measures 13.5-inches in length and offers a 20mm Picatinny rail at the 12 o'clock position as well as M-LOK slots at 3, 6, and 9 o'clock, with additional slots at offset angles. The upper rail mates seamlessly with the receiver rail, allowing for optical sight setups of any length to be mounted, including red dot sight and magnifier combinations. The use of M-LOK negative space attachment slots makes the front end super light and agile, and despite its length, the Saber can be swiftly manipulated easily, just like a...Sabre!

Close to the receiver the handguard has what appears to be QD sling sockets on either side. In our tests we found these sockets to be non-functional, at least with the QD swivels we had handy. If you plan to use a QD two-point sling setup with the Saber we recommend adding an M-LOK QD socket to the handguard at a position of your choosing and using this instead of the handguard sockets.

As we come to the receiver of the Saber we can take note of its familiar M4/AR-15 style layout, though it does have some notable enhancements which sit right in line with the G MK16 build. The charging handle is located where we would expect, at the top rear of the receiver, but is an ambidextrous design which can be pulled from either side, offering easy access to the HOP-up unit for both left and right-handed users.

When the charging handle is pulled rearwards the dust cover on the right side will open and the mock bolt will retract and lock back, revealing the rotary HOP-up unit within. The rotary HOP-up unit is the latest design for the M4/AR-15 AEG and is known for allowing finer increments of adjustment for more precise HOP-up application, and holding its setting for longer under the vibrations of full auto fire. This HOP-up unit is paired with a steel 6.03mm tightbore inner barrel, giving the Saber spot on accuracy right out of the box, with little left to improve!

Another hint at the real steel inspiration for this build comes in the form of the bolt release catch, which is used to close the mock bolt following a HOP-up adjustment. This part is significantly larger than the standard M4/AR-15 bolt catch to make the control easier to find when under pressure, and is known as the "Maritime Bolt Catch". Parts like this for Airsoft are difficult to find on the aftermarket so it's really nice to see ARCTURUS include this small but authentic detail in their MK16 AEG.

The fire selector is of the standard M4/AR-15 layout, with a 3-position selector switch located above the pistol grip on the left side, offering safe, semi-auto and full auto. The selector has a 90-degree throw between each fire mode, allowing the control to be used swiftly while minimising the chances of accidentally knocking the selector out of place.

The magazine release is located on the magazine well on the right side and is well within reach of the trigger finger for right-handed users. This mag catch is right-hand optimised but can be used by lefties as well with a bit of practice. The right side of the upper receiver has the usual M4/AR-15 features, including a mock forward assist button, mock brass deflector and the dust cover which conceals the mock bolt and HOP-up adjuster.

At the rear of the receiver, we are treated to an ambidextrous sling plate which offers two sling points on the left side and one on the right. The sling plate is ideal for single-point slings, but can also be paired with a front sling mount if you prefer a two-point sling setup. Being constructed from steel allows the sling plate to take the weight of the MK16 Saber easily, and provides confidence that the plate will never fail and dump your gorgeous rifle into the dirt.

Following the sling plate, we come to the 6-position M4/AR-15 buffer tube, which is constructed from aluminium for a great balance of strength, realism and low weight. The stock of the Saber is mounted over the buffer tube and features an enlarged crane style cheekpiece for greater comfort, a rubber butt plate with aggressive gripping texture, a low profile adjustment lever to reduce snags and a QD sling socket on either side, both of which are fully functional. The stock has 6 positions of adjustment, making it suitable for any body type or loadout, and has a hinged butt plate to allow fast access to the battery compartment.

The battery compartment is located inside the buffer tube, but you have the option of removing the rear plug of the buffer tube to allow your battery to be stored in the stock of the Saber, allowing for larger batteries to be used. To access the battery compartment you will need to hold the adjustment lever of the stock down and put an Allen key or similar tool through the small hole in the adjustment pin to hold it in the open position. With this complete, you can slide the stock off to the rear, and unscrew the buffer tube cap at the end of the threaded buffer tube.

We advise that once you have removed the buffer tube cap you stash it away for future use unless you are going with a slimline stock with no battery space, as the Saber's stock has a wealth of space inside which should be taken advantage of! With the cap removed you can now reinstall the stock, and turn the dial on the butt plate by 90 degrees to open the stock's battery compartment. Inside you will find a Deans battery connector (assuming you have removed the threaded cap of the buffer tube, otherwise, it's inside!) to which you mount your battery of choice. We recommend a 7.4V 1300mAh LiPo if you are using the buffer tube battery compartment, or a 7.4V 2600mAh LiPo in nunchuck/crane configuration if you are using the stock battery compartment.

On the inside, the MK16 Saber is equipped with a rock solid internal feature set with some well chosen upgrade parts and nothing overly complex which may go wrong. The gearbox is a version 2 reinforced type with a quick change spring guide mounted on ball bearings for reduced rotational stress, and the piston head is also fitted with ball bearings, resulting in a long lasting and low stress gearbox setup.

The nozzle is Teflon sealed for superb air seal qualities, and the steel gearset runs on 8mm steel bushings for a smooth gearbox sound and unlaboured functionality. All of the wiring is heavy gauge low resistance wiring, making for a setup which is far more efficient in both air seal and power use than most of its rivals. This superb feature set is enhanced by the microswitch trigger, which provides a snappy trigger response in semi-auto, and genuinely feels like it must have a MOSFET inside. It doesn't, but it looks like ARCTURUS has proved you don't need a MOSFET for a rapid response if your gearbox is well built!

So, whether you are looking for an advanced modern M4/AR-15 platform but you don't want to build it yourself, or you want a solid skirmish primary with slick functionality and little to go wrong, the ARCTURUS MK16 Saber AEG would be a great addition to your armoury. This AEG has enough length to sling BBs in the woods with the big boys but is light and agile up front so it can still do its business in the tight confines of CQB, if you have the skills!

Features

  • Full metal construction
  • 6.03mm Steel tightbore inner barrel
  • Rotary adjustable HOP-up unit
  • 13.5-inch M-LOK handguard - Plenty of space for modern shooting styles!
  • 14mm CCW male threaded outer barrel - Ready for a tracer or suppressor
  • 20mm Picatinny railed receiver - Seamless integration with the handguard rail
  • Ambidextrous charging handle - Modern looks, ambi HOP-up access
  • Extended bolt release - Matches the real MK16 build perfectly
  • Ergonomic pistol grip with filled backstrap - Comfortable for most hand sizes
  • Ambidextrous steel sling plate - Ready for single point slings
  • 6 Position M4/AR-15 buffer tube - Compatible with aftermarket M4/AR-15 AEG stocks
  • Mil-spec curved trigger - Perfect for military style builds
  • Bearing spring guide and piston head - Reduced rotational force, less friction
  • Rotary adjustable HOP-up unit - Fine increments of adjustment, holds setting well
  • Teflon sealed air nozzle - Great compression/air seal qualities
  • Microswitch trigger - Snappy trigger response
  • Low resistance wiring - Great electrical efficiency
  • 8mm Steel bushings - Smooth running gearbox
  • Compatible with M4/AR-15 AEG magazines

Package Includes

  • ARCTURUS M4/AR-15 MK16 Saber AT-AR11 AEG
  • 30/130rnd Adjustable Capacity Magazine
  • Flip-up iron sight set
  • Deans to mini-Tamiya adapter
  • User manual
  • Cleaning/unjamming rod

Specification

General

Weapon Construction External
Weapon Type
Assault Rifle
Over 18 Only Icon
Over 18
Yes
Icon UKARA - United Kingdom Airsoft Retailer Association
Defence / UKARA Required
Yes, No,
FPS Icon
FPS (Feet Per Second), using 0.20g BB
Approx. 330fps ± 10%, using 0.20g BB
Site Legal Icon
Site Legal, using 0.20g BB
Yes
Screwdriver Icon
Pre-Built
Yes
Package
Included Items
  • Magazine
  • Cleaning Rod
  • Ironsight Set
  • Deans to Mini-Tamiya Connector
Skill Level Icon
User Skill Level
Regular Player

Weight and Dimension

Weight KG Icon
Weight (KG)
Approx. 2.56kg
Weapon Length Collapsed
Length (Collapsed)
84.5cm
Weapon Length Extended
Length (Extended)
93cm

Construction

Colour Wheel Greyscale
Primary Colour
Black
Construction Icon
Construction
Steel dust cover, sling plate, castle nut, mock bolt, fire selector and pins. Aluminium handguard. Alloy receiver, buffer tube, trigger guard and trim parts. Polymer grip and stock.
Weapon Construction External
External Construction
Polymer
Alloy
Aluminium
Steel
Gearbox Icon
Internal Construction
Polymer
Alloy
Aluminium
Steel

Weapon Specific

Power Source Icon
Powered By
Electric
Blowback Icon
Blowback
None
Weapon Platform
AR, M4 / AR-15 / M16, Assault Rifle,
Magazine Style Icon
Magazine Style
STANAG, Long Gun Magazine, Assault Rifle, M4 / AR Platform,
Fire Select Icon
Fire Selector
PatrolBase | Fire Select Safe
Safe
Patrol Base | Fire Select - Semi Automatic
Semi Automatic
Patrol Base | Full Automatic
Full Automatic
Weapon Safety Features Icon
Safety Features
Trigger Lock
Shooter Configuration Icon
Shooter Configuration
Right Handed
Weapon Configuration Icon
Weapon Configuration
Standard
Weapon Scale Icon
Weapon Scale
1:1
Suggested BB Weight
0.25g

Hop-Up

Hop-Up Unit Icon
Hop-Up Unit
Yes
Hop-Up Unit Adjuster Icon
Hop-Up Adjuster
Rotary
Hop-Up Unit Location Icon
Hop-Up Location
Behind mock bolt carrier, accessible when the charging handle is pulled and the mock bolt is locked to the rear.

Furniture

Weapon Furniture Icon
Furniture
  • Railed Handguard
  • AR Buffer Tube
  • Railed Receiver
  • Ambidextrous Charging Handle
  • Sliding Stock
  • Ergonomic Pistol Grip
  • QD Sling Point
  • Ambidextrous Sling Plate
  • 3-Prong SF Style Flash hider
  • M-LOK Handguard
  • Enlarged bolt release catch
Rail System Icon
Rail System
20mm RIS / RAS , 20mm Railed Receiver, M-LOK Rail system,
Icon Stock Positions
Stock Setting
Sliding , Multi-Position ,
Weapon Length Extended
Stock Positions
6 Position
Sight Type Icon
Sight Type
Iron Sights , Aperture Iron Sight,
Sling Plate Icon
Sling Options
Buffer Plate , Stock , QD ,

Barrel

Outer Barrel Length (in)
14.5''
Icon Thread Type
Outer Barrel Thread Type
Male
Icon Thread Direction
Outer Barrel Thread Direction
CCW (Counter Clockwise)
Outer Barrel Thread Size
14mm
Inner Barrel Diameter
6.03mm
Inner Barrel Length
363mm

Magazine Specific

Magazine Type
Medium Capacity , AEG, Adjustable Capacity,
Magazine BB Capacity
Approx. 130 Rounds
Magazine BB Fill Method
Speed Loader
Magazine BB Fill Location
Top

Electric Gun Specific Information

Gearbox
Gearbox Icon
Gearbox Version
V2 Gearbox
Wiring Icon
Gearbox Wiring
Rear Wired
Spring Change Icon
Gearbox Quick Change Spring
Yes
Motor
Airsoft Motor Icon
Motor Type
Standard
Battery Specific
Battery Connector
Patrol Base | Icon | Deans
Deans
,
Deans To Mini Tamiya
Deans To Mini Tamiya Adaptor
,

Product Testing Data

Notepad Icon
Test Description
330 FPS +/- 10%
Notepad Icon
Tested Using
0.2g ASG BLASTER
Notepad Icon
Test Date
11/11/2022

Size guide

Joule Charts

Special Instructions

These table can be used as a reference to see if the BB weight you are using will be over acceptable Joulage limits at some Airsoft Sites in the UK. To check if the weight can be used chrono your weapon using the BB you intend to use, and then compare it to the chart.

FPS, Power and Joule Limits can vary from site to site, so please get in touch with where you're going to play with in advance to avoid disappointment.

Suggested limits are based on Joulage Limit rules used Halo Mill: Proving Grounds, with a 350fps limit for Automatic Replicas, 400fps for Semi-Automatic Replicas, and 500fps for Bolt Action Replicas.

Tap the tabs below to open the relevant chart for your replica.

Suggested limits are based on Joulage Limit rules used Halo Mill: Proving Grounds, and is the equivalent of 350fps, using 0.20g BB resulting in an upper limit of 1.14j.

Velocity BB Weight (Grams)
FPS 0.20 0.25 0.28 0.30 0.32 0.36 0.40 0.43 0.45 0.50
250 0.58 0.73 0.81 0.87 0.93 1.05 1.16 1.25 1.31 1.45
260 0.63 0.79 0.88 0.94 1.00 1.13 1.26 1.35 1.41 1.57
270 0.68 0.85 0.95 1.02 1.08 1.22 1.35 1.46 1.52 1.69
280 0.73 0.91 1.02 1.09 1.17 1.31 1.46 1.57 1.64 1.82
290 0.78 0.98 1.09 1.17 1.25 1.41 1.56 1.68 1.76 1.95
300 0.84 1.05 1.17 1.25 1.34 1.51 1.67 1.80 1.88 2.09
310 0.89 1.12 1.25 1.34 1.43 1.61 1.79 1.92 2.01 2.23
320 0.95 1.19 1.33 1.43 1.52 1.71 1.90 2.05 2.14 2.38
325 0.98 1.23 1.37 1.47 1.57 1.77 1.96 2.11 2.21 2.45
328 1.00 1.25 1.40 1.50 1.60 1.80 2.00 2.15 2.25 2.50
330 1.01 1.26 1.42 1.52 1.62 1.82 2.02 2.18 2.28 2.53
335 1.04 1.30 1.46 1.56 1.67 1.88 2.09 2.24 2.35 2.61
340 1.07 1.34 1.50 1.61 1.72 1.93 2.15 2.31 2.42 2.68
345 1.11 1.38 1.55 1.66 1.77 1.99 2.21 2.38 2.49 2.76
350 1.14 1.42 1.59 1.71 1.82 2.05 2.28 2.45 2.56 2.85
355 1.17 1.46 1.64 1.76 1.87 2.11 2.34 2.52 2.63 2.93
360 1.20 1.51 1.69 1.81 1.93 2.17 2.41 2.59 2.71 3.01

Suggested limits are based on Joulage Limit rules used at Halo Mill: Proving Grounds, and is the equivalent of 400fps, using 0.20g BB resulting in an upper limit of 1.49j.

Velocity BB Weight (Grams)
FPS 0.20 0.25 0.28 0.30 0.32 0.36 0.40 0.43 0.45 0.50
250 0.58 0.73 0.81 0.87 0.93 1.05 1.16 1.25 1.31 1.45
260 0.63 0.79 0.88 0.94 1.00 1.13 1.26 1.35 1.41 1.57
270 0.68 0.85 0.95 1.02 1.08 1.22 1.35 1.46 1.52 1.69
280 0.73 0.91 1.02 1.09 1.17 1.31 1.46 1.57 1.64 1.82
290 0.78 0.98 1.09 1.17 1.25 1.41 1.56 1.68 1.76 1.95
300 0.84 1.05 1.17 1.25 1.34 1.51 1.67 1.80 1.88 2.09
310 0.89 1.12 1.25 1.34 1.43 1.61 1.79 1.92 2.01 2.23
320 0.95 1.19 1.33 1.43 1.52 1.71 1.90 2.05 2.14 2.38
330 1.01 1.26 1.42 1.52 1.62 1.82 2.02 2.18 2.28 2.53
340 1.07 1.34 1.50 1.61 1.72 1.93 2.15 2.31 2.42 2.68
350 1.14 1.42 1.59 1.71 1.82 2.05 2.28 2.45 2.56 2.85
360 1.20 1.51 1.69 1.81 1.93 2.17 2.41 2.59 2.71 3.01
370 1.27 1.59 1.78 1.91 2.03 2.29 2.54 2.73 2.86 3.18
380 1.34 1.68 1.88 2.01 2.15 2.41 2.68 2.88 3.02 3.35
390 1.41 1.77 1.98 2.12 2.26 2.54 2.83 3.04 3.18 3.53
400 1.49 1.86 2.08 2.23 2.38 2.68 2.97 3.20 3.34 3.72
410 1.56 1.95 2.19 2.34 2.50 2.81 3.12 3.36 3.51 3.90

Suggested limits are based on Joulage Limit rules used at Halo Mill: Proving Grounds, and is the equivalent of 500fps, using 0.20g BB resulting in an upper limit of 2.32j.

Velocity BB Weight (Grams)
FPS 0.20 0.25 0.28 0.30 0.32 0.36 0.40 0.43 0.45 0.50
250 0.58 0.73 0.81 0.87 0.93 1.05 1.16 1.25 1.31 1.45
260 0.63 0.79 0.88 0.94 1.00 1.13 1.26 1.35 1.41 1.57
270 0.68 0.85 0.95 1.02 1.08 1.22 1.35 1.46 1.52 1.69
280 0.73 0.91 1.02 1.09 1.17 1.31 1.46 1.57 1.64 1.82
290 0.78 0.98 1.09 1.17 1.25 1.41 1.56 1.68 1.76 1.95
300 0.84 1.05 1.17 1.25 1.34 1.51 1.67 1.80 1.88 2.09
310 0.89 1.12 1.25 1.34 1.43 1.61 1.79 1.92 2.01 2.23
320 0.95 1.19 1.33 1.43 1.52 1.71 1.90 2.05 2.14 2.38
330 1.01 1.26 1.42 1.52 1.62 1.82 2.02 2.18 2.28 2.53
340 1.07 1.34 1.50 1.61 1.72 1.93 2.15 2.31 2.42 2.68
350 1.14 1.42 1.59 1.71 1.82 2.05 2.28 2.45 2.56 2.85
360 1.20 1.51 1.69 1.81 1.93 2.17 2.41 2.59 2.71 3.01
370 1.27 1.59 1.78 1.91 2.03 2.29 2.54 2.73 2.86 3.18
380 1.34 1.68 1.88 2.01 2.15 2.41 2.68 2.88 3.02 3.35
390 1.41 1.77 1.98 2.12 2.26 2.54 2.83 3.04 3.18 3.53
400 1.49 1.86 2.08 2.23 2.38 2.68 2.97 3.20 3.34 3.72
410 1.56 1.95 2.19 2.34 2.50 2.81 3.12 3.36 3.51 3.90
420 1.64 2.05 2.29 2.46 2.62 2.95 3.28 3.52 3.69 4.10
430 1.72 2.15 2.40 2.58 2.75 3.09 3.44 3.69 3.86 4.29
440 1.80 2.25 2.52 2.70 2.88 3.24 3.60 3.87 4.05 4.50
450 1.88 2.35 2.63 2.82 3.01 3.39 3.76 4.04 4.23 4.70
460 1.97 2.46 2.75 2.95 3.15 3.54 3.93 4.23 4.42 4.91
470 2.05 2.57 2.87 3.08 3.28 3.69 4.10 4.41 4.62 5.13
480 2.14 2.68 3.00 3.21 3.42 3.85 4.28 4.60 4.82 5.35
490 2.23 2.79 3.12 3.35 3.57 4.02 4.46 4.80 5.02 5.58
500 2.32 2.90 3.25 3.48 3.72 4.18 4.65 4.99 5.23 5.81
510 2.42 3.02 3.38 3.62 3.87 4.35 4.83 5.20 5.44 6.04